APA
Clark G. L. (., Hawley G. G. (., . (1957). The Encyclopaedia of Chemistry. New York: Reinhold.
Chicago
Clark George L (Ed.), Hawley Geener G (Ed.), . 1957. The Encyclopaedia of Chemistry. New York: Reinhold.
Harvard
Clark G. L. (., Hawley G. G. (., . (1957). The Encyclopaedia of Chemistry. New York: Reinhold.
MLA
Clark George L (Ed.), Hawley Geener G (Ed.), . The Encyclopaedia of Chemistry. New York: Reinhold. 1957.